Home / 781,749.90-1,078,841.25-459,455.40

Finding the Fourth Proportional to 781,749.90, 1,078,841.25 and 459,455.40

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Solution

The fourth proportional to 781,749.90, 1,078,841.25 and 459,455.40 is: 634,063.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,749.90 : 1,078,841.25 = 459,455.40 : x
  2. Step 2: Convert to fraction form
    781,749.90/1,078,841.25 = 459,455.40/x
  3. Step 3: Cross multiply
    781,749.90x = 1,078,841.25 × 459,455.40
  4. Step 4: Simplify right side
    781,749.90x = 495,679,438,055.25
  5. Step 5: Solve for x
    x = 495,679,438,055.25/781,749.90
  6. Step 6: Final answer
    x = 634,063.96

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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.