Home / 864,000.10-1,296,000.15-612,057.70

Finding the Fourth Proportional to 864,000.10, 1,296,000.15 and 612,057.70

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Solution

The fourth proportional to 864,000.10, 1,296,000.15 and 612,057.70 is: 918,086.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    864,000.10 : 1,296,000.15 = 612,057.70 : x
  2. Step 2: Convert to fraction form
    864,000.10/1,296,000.15 = 612,057.70/x
  3. Step 3: Cross multiply
    864,000.10x = 1,296,000.15 × 612,057.70
  4. Step 4: Simplify right side
    864,000.10x = 793,226,871,008.66
  5. Step 5: Solve for x
    x = 793,226,871,008.66/864,000.10
  6. Step 6: Final answer
    x = 918,086.55

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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.