Home / 712,196.40-982,842.75-389,901.18

Finding the Fourth Proportional to 712,196.40, 982,842.75 and 389,901.18

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Solution

The fourth proportional to 712,196.40, 982,842.75 and 389,901.18 is: 538,070.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,196.40 : 982,842.75 = 389,901.18 : x
  2. Step 2: Convert to fraction form
    712,196.40/982,842.75 = 389,901.18/x
  3. Step 3: Cross multiply
    712,196.40x = 982,842.75 × 389,901.18
  4. Step 4: Simplify right side
    712,196.40x = 383,211,547,979.45
  5. Step 5: Solve for x
    x = 383,211,547,979.45/712,196.40
  6. Step 6: Final answer
    x = 538,070.04

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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.