Home / 1,320,402,812.40-1,980,604,218.60-708,182,780.40

Finding the Fourth Proportional to 1,320,402,812.40, 1,980,604,218.60 and 708,182,780.40

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Solution

The fourth proportional to 1,320,402,812.40, 1,980,604,218.60 and 708,182,780.40 is: 1,062,274,170.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,402,812.40 : 1,980,604,218.60 = 708,182,780.40 : x
  2. Step 2: Convert to fraction form
    1,320,402,812.40/1,980,604,218.60 = 708,182,780.40/x
  3. Step 3: Cross multiply
    1,320,402,812.40x = 1,980,604,218.60 × 708,182,780.40
  4. Step 4: Simplify right side
    1,320,402,812.40x = 1,402,629,802,400,117,248
  5. Step 5: Solve for x
    x = 1,402,629,802,400,117,248/1,320,402,812.40
  6. Step 6: Final answer
    x = 1,062,274,170.60

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.