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Finding the Fourth Proportional to 710,673.71, 980,728.11 and 404,750.07

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Solution

The fourth proportional to 710,673.71, 980,728.11 and 404,750.07 is: 558,554.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,673.71 : 980,728.11 = 404,750.07 : x
  2. Step 2: Convert to fraction form
    710,673.71/980,728.11 = 404,750.07/x
  3. Step 3: Cross multiply
    710,673.71x = 980,728.11 × 404,750.07
  4. Step 4: Simplify right side
    710,673.71x = 396,949,771,173.47
  5. Step 5: Solve for x
    x = 396,949,771,173.47/710,673.71
  6. Step 6: Final answer
    x = 558,554.18

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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.