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Finding the Fourth Proportional to 978,841.23, 1,350,810.11 and 549,130.59

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Solution

The fourth proportional to 978,841.23, 1,350,810.11 and 549,130.59 is: 757,805.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,841.23 : 1,350,810.11 = 549,130.59 : x
  2. Step 2: Convert to fraction form
    978,841.23/1,350,810.11 = 549,130.59/x
  3. Step 3: Cross multiply
    978,841.23x = 1,350,810.11 × 549,130.59
  4. Step 4: Simplify right side
    978,841.23x = 741,771,152,682.27
  5. Step 5: Solve for x
    x = 741,771,152,682.27/978,841.23
  6. Step 6: Final answer
    x = 757,805.38

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1.5x scale

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.