Home / 722,636,899.62-997,238,920.02-409,371,113.18

Finding the Fourth Proportional to 722,636,899.62, 997,238,920.02 and 409,371,113.18

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Solution

The fourth proportional to 722,636,899.62, 997,238,920.02 and 409,371,113.18 is: 564,932,135.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,636,899.62 : 997,238,920.02 = 409,371,113.18 : x
  2. Step 2: Convert to fraction form
    722,636,899.62/997,238,920.02 = 409,371,113.18/x
  3. Step 3: Cross multiply
    722,636,899.62x = 997,238,920.02 × 409,371,113.18
  4. Step 4: Simplify right side
    722,636,899.62x = 408,240,806,795,008,384
  5. Step 5: Solve for x
    x = 408,240,806,795,008,384/722,636,899.62
  6. Step 6: Final answer
    x = 564,932,135.36

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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.