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Finding the Fourth Proportional to 1,379,780,969.42, 1,904,088,051.42 and 753,249,397.34

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Solution

The fourth proportional to 1,379,780,969.42, 1,904,088,051.42 and 753,249,397.34 is: 1,039,478,880.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,379,780,969.42 : 1,904,088,051.42 = 753,249,397.34 : x
  2. Step 2: Convert to fraction form
    1,379,780,969.42/1,904,088,051.42 = 753,249,397.34/x
  3. Step 3: Cross multiply
    1,379,780,969.42x = 1,904,088,051.42 × 753,249,397.34
  4. Step 4: Simplify right side
    1,379,780,969.42x = 1,434,253,177,214,409,984
  5. Step 5: Solve for x
    x = 1,434,253,177,214,409,984/1,379,780,969.42
  6. Step 6: Final answer
    x = 1,039,478,880.35

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Double scale
Find fourth proportional to 1,379,780,970.42, 1,904,088,052.80 and 753,249,398.34
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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.