Home / 658,731.12-909,059.40-368,375.28

Finding the Fourth Proportional to 658,731.12, 909,059.40 and 368,375.28

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Solution

The fourth proportional to 658,731.12, 909,059.40 and 368,375.28 is: 508,363.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,731.12 : 909,059.40 = 368,375.28 : x
  2. Step 2: Convert to fraction form
    658,731.12/909,059.40 = 368,375.28/x
  3. Step 3: Cross multiply
    658,731.12x = 909,059.40 × 368,375.28
  4. Step 4: Simplify right side
    658,731.12x = 334,875,011,011.63
  5. Step 5: Solve for x
    x = 334,875,011,011.63/658,731.12
  6. Step 6: Final answer
    x = 508,363.73

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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.