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Finding the Fourth Proportional to 710,750.90, 980,836.29 and 388,460.90

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Solution

The fourth proportional to 710,750.90, 980,836.29 and 388,460.90 is: 536,076.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,750.90 : 980,836.29 = 388,460.90 : x
  2. Step 2: Convert to fraction form
    710,750.90/980,836.29 = 388,460.90/x
  3. Step 3: Cross multiply
    710,750.90x = 980,836.29 × 388,460.90
  4. Step 4: Simplify right side
    710,750.90x = 381,016,547,966.06
  5. Step 5: Solve for x
    x = 381,016,547,966.06/710,750.90
  6. Step 6: Final answer
    x = 536,076.07

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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.