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Finding the Fourth Proportional to 528,060.60, 728,719.65 and 286,342.83

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Solution

The fourth proportional to 528,060.60, 728,719.65 and 286,342.83 is: 395,150.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,060.60 : 728,719.65 = 286,342.83 : x
  2. Step 2: Convert to fraction form
    528,060.60/728,719.65 = 286,342.83/x
  3. Step 3: Cross multiply
    528,060.60x = 728,719.65 × 286,342.83
  4. Step 4: Simplify right side
    528,060.60x = 208,663,646,857.61
  5. Step 5: Solve for x
    x = 208,663,646,857.61/528,060.60
  6. Step 6: Final answer
    x = 395,150.95

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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.