Home / 865,720.08-1,298,719.80-266,681.20

Finding the Fourth Proportional to 865,720.08, 1,298,719.80 and 266,681.20

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Solution

The fourth proportional to 865,720.08, 1,298,719.80 and 266,681.20 is: 400,064.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,720.08 : 1,298,719.80 = 266,681.20 : x
  2. Step 2: Convert to fraction form
    865,720.08/1,298,719.80 = 266,681.20/x
  3. Step 3: Cross multiply
    865,720.08x = 1,298,719.80 × 266,681.20
  4. Step 4: Simplify right side
    865,720.08x = 346,344,154,727.76
  5. Step 5: Solve for x
    x = 346,344,154,727.76/865,720.08
  6. Step 6: Final answer
    x = 400,064.83

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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.