Home / 688,965.60-1,033,480.80-215,666.40

Finding the Fourth Proportional to 688,965.60, 1,033,480.80 and 215,666.40

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Solution

The fourth proportional to 688,965.60, 1,033,480.80 and 215,666.40 is: 323,509.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,965.60 : 1,033,480.80 = 215,666.40 : x
  2. Step 2: Convert to fraction form
    688,965.60/1,033,480.80 = 215,666.40/x
  3. Step 3: Cross multiply
    688,965.60x = 1,033,480.80 × 215,666.40
  4. Step 4: Simplify right side
    688,965.60x = 222,887,083,605.12
  5. Step 5: Solve for x
    x = 222,887,083,605.12/688,965.60
  6. Step 6: Final answer
    x = 323,509.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.