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Finding the Fourth Proportional to 710,581.80, 980,590.98 and 388,284.48

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Solution

The fourth proportional to 710,581.80, 980,590.98 and 388,284.48 is: 535,826.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,581.80 : 980,590.98 = 388,284.48 : x
  2. Step 2: Convert to fraction form
    710,581.80/980,590.98 = 388,284.48/x
  3. Step 3: Cross multiply
    710,581.80x = 980,590.98 × 388,284.48
  4. Step 4: Simplify right side
    710,581.80x = 380,748,258,761.99
  5. Step 5: Solve for x
    x = 380,748,258,761.99/710,581.80
  6. Step 6: Final answer
    x = 535,826.08

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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.