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Finding the Fourth Proportional to 523,064.32, 784,598.08 and 143,990.08

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Solution

The fourth proportional to 523,064.32, 784,598.08 and 143,990.08 is: 215,985.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    523,064.32 : 784,598.08 = 143,990.08 : x
  2. Step 2: Convert to fraction form
    523,064.32/784,598.08 = 143,990.08/x
  3. Step 3: Cross multiply
    523,064.32x = 784,598.08 × 143,990.08
  4. Step 4: Simplify right side
    523,064.32x = 112,974,340,307.05
  5. Step 5: Solve for x
    x = 112,974,340,307.05/523,064.32
  6. Step 6: Final answer
    x = 215,985.56

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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.