Home / 687,746.32-949,158.12-385,941.52

Finding the Fourth Proportional to 687,746.32, 949,158.12 and 385,941.52

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Solution

The fourth proportional to 687,746.32, 949,158.12 and 385,941.52 is: 532,637.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,746.32 : 949,158.12 = 385,941.52 : x
  2. Step 2: Convert to fraction form
    687,746.32/949,158.12 = 385,941.52/x
  3. Step 3: Cross multiply
    687,746.32x = 949,158.12 × 385,941.52
  4. Step 4: Simplify right side
    687,746.32x = 366,319,527,553.14
  5. Step 5: Solve for x
    x = 366,319,527,553.14/687,746.32
  6. Step 6: Final answer
    x = 532,637.57

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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.