Home / 638,549.47-881,205.15-348,158.64

Finding the Fourth Proportional to 638,549.47, 881,205.15 and 348,158.64

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Solution

The fourth proportional to 638,549.47, 881,205.15 and 348,158.64 is: 480,462.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,549.47 : 881,205.15 = 348,158.64 : x
  2. Step 2: Convert to fraction form
    638,549.47/881,205.15 = 348,158.64/x
  3. Step 3: Cross multiply
    638,549.47x = 881,205.15 × 348,158.64
  4. Step 4: Simplify right side
    638,549.47x = 306,799,186,585.00
  5. Step 5: Solve for x
    x = 306,799,186,585.00/638,549.47
  6. Step 6: Final answer
    x = 480,462.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.