Home / 690,931.60-1,034,647.80-512,472.40

Finding the Fourth Proportional to 690,931.60, 1,034,647.80 and 512,472.40

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Solution

The fourth proportional to 690,931.60, 1,034,647.80 and 512,472.40 is: 767,410.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,931.60 : 1,034,647.80 = 512,472.40 : x
  2. Step 2: Convert to fraction form
    690,931.60/1,034,647.80 = 512,472.40/x
  3. Step 3: Cross multiply
    690,931.60x = 1,034,647.80 × 512,472.40
  4. Step 4: Simplify right side
    690,931.60x = 530,228,441,220.72
  5. Step 5: Solve for x
    x = 530,228,441,220.72/690,931.60
  6. Step 6: Final answer
    x = 767,410.90

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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.