Home / 385,386.78-577,332.12-284,000.85

Finding the Fourth Proportional to 385,386.78, 577,332.12 and 284,000.85

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Solution

The fourth proportional to 385,386.78, 577,332.12 and 284,000.85 is: 425,450.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,386.78 : 577,332.12 = 284,000.85 : x
  2. Step 2: Convert to fraction form
    385,386.78/577,332.12 = 284,000.85/x
  3. Step 3: Cross multiply
    385,386.78x = 577,332.12 × 284,000.85
  4. Step 4: Simplify right side
    385,386.78x = 163,962,812,812.30
  5. Step 5: Solve for x
    x = 163,962,812,812.30/385,386.78
  6. Step 6: Final answer
    x = 425,450.02

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1.5x scale

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.