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Finding the Fourth Proportional to 663,285.88, 915,222.45 and 372,858.76

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Solution

The fourth proportional to 663,285.88, 915,222.45 and 372,858.76 is: 514,482.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,285.88 : 915,222.45 = 372,858.76 : x
  2. Step 2: Convert to fraction form
    663,285.88/915,222.45 = 372,858.76/x
  3. Step 3: Cross multiply
    663,285.88x = 915,222.45 × 372,858.76
  4. Step 4: Simplify right side
    663,285.88x = 341,248,707,831.16
  5. Step 5: Solve for x
    x = 341,248,707,831.16/663,285.88
  6. Step 6: Final answer
    x = 514,482.09

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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.