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Finding the Fourth Proportional to 710,618.64, 980,612.06 and 388,331.24

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Solution

The fourth proportional to 710,618.64, 980,612.06 and 388,331.24 is: 535,874.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,618.64 : 980,612.06 = 388,331.24 : x
  2. Step 2: Convert to fraction form
    710,618.64/980,612.06 = 388,331.24/x
  3. Step 3: Cross multiply
    710,618.64x = 980,612.06 × 388,331.24
  4. Step 4: Simplify right side
    710,618.64x = 380,802,297,218.75
  5. Step 5: Solve for x
    x = 380,802,297,218.75/710,618.64
  6. Step 6: Final answer
    x = 535,874.34

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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.