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Finding the Fourth Proportional to 456,007.40, 684,011.10 and 288,045.80

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Solution

The fourth proportional to 456,007.40, 684,011.10 and 288,045.80 is: 432,068.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,007.40 : 684,011.10 = 288,045.80 : x
  2. Step 2: Convert to fraction form
    456,007.40/684,011.10 = 288,045.80/x
  3. Step 3: Cross multiply
    456,007.40x = 684,011.10 × 288,045.80
  4. Step 4: Simplify right side
    456,007.40x = 197,026,524,508.38
  5. Step 5: Solve for x
    x = 197,026,524,508.38/456,007.40
  6. Step 6: Final answer
    x = 432,068.70

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Similar ratio
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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.