Home / 457,812,019.40-686,718,029.10-439,955,601.80

Finding the Fourth Proportional to 457,812,019.40, 686,718,029.10 and 439,955,601.80

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Solution

The fourth proportional to 457,812,019.40, 686,718,029.10 and 439,955,601.80 is: 659,933,402.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,812,019.40 : 686,718,029.10 = 439,955,601.80 : x
  2. Step 2: Convert to fraction form
    457,812,019.40/686,718,029.10 = 439,955,601.80/x
  3. Step 3: Cross multiply
    457,812,019.40x = 686,718,029.10 × 439,955,601.80
  4. Step 4: Simplify right side
    457,812,019.40x = 302,125,443,759,600,448
  5. Step 5: Solve for x
    x = 302,125,443,759,600,448/457,812,019.40
  6. Step 6: Final answer
    x = 659,933,402.70

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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.