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Finding the Fourth Proportional to 526,312.32, 726,256.53 and 388,564.56

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Solution

The fourth proportional to 526,312.32, 726,256.53 and 388,564.56 is: 536,178.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,312.32 : 726,256.53 = 388,564.56 : x
  2. Step 2: Convert to fraction form
    526,312.32/726,256.53 = 388,564.56/x
  3. Step 3: Cross multiply
    526,312.32x = 726,256.53 × 388,564.56
  4. Step 4: Simplify right side
    526,312.32x = 282,197,549,026.58
  5. Step 5: Solve for x
    x = 282,197,549,026.58/526,312.32
  6. Step 6: Final answer
    x = 536,178.88

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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.