Home / 688,613.28-950,284.80-382,688.64

Finding the Fourth Proportional to 688,613.28, 950,284.80 and 382,688.64

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Solution

The fourth proportional to 688,613.28, 950,284.80 and 382,688.64 is: 528,109.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,613.28 : 950,284.80 = 382,688.64 : x
  2. Step 2: Convert to fraction form
    688,613.28/950,284.80 = 382,688.64/x
  3. Step 3: Cross multiply
    688,613.28x = 950,284.80 × 382,688.64
  4. Step 4: Simplify right side
    688,613.28x = 363,663,197,724.67
  5. Step 5: Solve for x
    x = 363,663,197,724.67/688,613.28
  6. Step 6: Final answer
    x = 528,109.47

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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.