Home / 442,896,281.40-664,344,422.10-420,725,350.20

Finding the Fourth Proportional to 442,896,281.40, 664,344,422.10 and 420,725,350.20

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Solution

The fourth proportional to 442,896,281.40, 664,344,422.10 and 420,725,350.20 is: 631,088,025.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,896,281.40 : 664,344,422.10 = 420,725,350.20 : x
  2. Step 2: Convert to fraction form
    442,896,281.40/664,344,422.10 = 420,725,350.20/x
  3. Step 3: Cross multiply
    442,896,281.40x = 664,344,422.10 × 420,725,350.20
  4. Step 4: Simplify right side
    442,896,281.40x = 279,506,539,641,439,136
  5. Step 5: Solve for x
    x = 279,506,539,641,439,136/442,896,281.40
  6. Step 6: Final answer
    x = 631,088,025.30

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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.