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Finding the Fourth Proportional to 478,792.16, 716,070.73 and 425,855.83

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Solution

The fourth proportional to 478,792.16, 716,070.73 and 425,855.83 is: 636,900.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,792.16 : 716,070.73 = 425,855.83 : x
  2. Step 2: Convert to fraction form
    478,792.16/716,070.73 = 425,855.83/x
  3. Step 3: Cross multiply
    478,792.16x = 716,070.73 × 425,855.83
  4. Step 4: Simplify right side
    478,792.16x = 304,942,894,349.15
  5. Step 5: Solve for x
    x = 304,942,894,349.15/478,792.16
  6. Step 6: Final answer
    x = 636,900.34

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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.