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Finding the Fourth Proportional to 607,547.10, 911,320.65 and 291,927.90

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Solution

The fourth proportional to 607,547.10, 911,320.65 and 291,927.90 is: 437,891.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,547.10 : 911,320.65 = 291,927.90 : x
  2. Step 2: Convert to fraction form
    607,547.10/911,320.65 = 291,927.90/x
  3. Step 3: Cross multiply
    607,547.10x = 911,320.65 × 291,927.90
  4. Step 4: Simplify right side
    607,547.10x = 266,039,923,581.14
  5. Step 5: Solve for x
    x = 266,039,923,581.14/607,547.10
  6. Step 6: Final answer
    x = 437,891.85

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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.