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Finding the Fourth Proportional to 527,081.40, 788,807.70 and 316,870.20

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Solution

The fourth proportional to 527,081.40, 788,807.70 and 316,870.20 is: 474,214.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,081.40 : 788,807.70 = 316,870.20 : x
  2. Step 2: Convert to fraction form
    527,081.40/788,807.70 = 316,870.20/x
  3. Step 3: Cross multiply
    527,081.40x = 788,807.70 × 316,870.20
  4. Step 4: Simplify right side
    527,081.40x = 249,949,653,660.54
  5. Step 5: Solve for x
    x = 249,949,653,660.54/527,081.40
  6. Step 6: Final answer
    x = 474,214.52

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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.