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Finding the Fourth Proportional to 527,084.40, 788,812.20 and 316,873.20

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Solution

The fourth proportional to 527,084.40, 788,812.20 and 316,873.20 is: 474,219.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,084.40 : 788,812.20 = 316,873.20 : x
  2. Step 2: Convert to fraction form
    527,084.40/788,812.20 = 316,873.20/x
  3. Step 3: Cross multiply
    527,084.40x = 788,812.20 × 316,873.20
  4. Step 4: Simplify right side
    527,084.40x = 249,953,446,013.04
  5. Step 5: Solve for x
    x = 249,953,446,013.04/527,084.40
  6. Step 6: Final answer
    x = 474,219.02

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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.