Home / 690,930.60-1,034,646.30-512,471.40

Finding the Fourth Proportional to 690,930.60, 1,034,646.30 and 512,471.40

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Solution

The fourth proportional to 690,930.60, 1,034,646.30 and 512,471.40 is: 767,409.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,930.60 : 1,034,646.30 = 512,471.40 : x
  2. Step 2: Convert to fraction form
    690,930.60/1,034,646.30 = 512,471.40/x
  3. Step 3: Cross multiply
    690,930.60x = 1,034,646.30 × 512,471.40
  4. Step 4: Simplify right side
    690,930.60x = 530,226,637,865.82
  5. Step 5: Solve for x
    x = 530,226,637,865.82/690,930.60
  6. Step 6: Final answer
    x = 767,409.40

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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.