Home / 690,400.60-1,034,274.12-423,382.48

Finding the Fourth Proportional to 690,400.60, 1,034,274.12 and 423,382.48

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Solution

The fourth proportional to 690,400.60, 1,034,274.12 and 423,382.48 is: 634,260.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,400.60 : 1,034,274.12 = 423,382.48 : x
  2. Step 2: Convert to fraction form
    690,400.60/1,034,274.12 = 423,382.48/x
  3. Step 3: Cross multiply
    690,400.60x = 1,034,274.12 × 423,382.48
  4. Step 4: Simplify right side
    690,400.60x = 437,893,541,925.42
  5. Step 5: Solve for x
    x = 437,893,541,925.42/690,400.60
  6. Step 6: Final answer
    x = 634,260.08

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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.