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Finding the Fourth Proportional to 977,581.40, 1,370,480.20 and 977,581.40

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Solution

The fourth proportional to 977,581.40, 1,370,480.20 and 977,581.40 is: 1,370,480.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    977,581.40 : 1,370,480.20 = 977,581.40 : x
  2. Step 2: Convert to fraction form
    977,581.40/1,370,480.20 = 977,581.40/x
  3. Step 3: Cross multiply
    977,581.40x = 1,370,480.20 × 977,581.40
  4. Step 4: Simplify right side
    977,581.40x = 1,339,755,952,588.28
  5. Step 5: Solve for x
    x = 1,339,755,952,588.28/977,581.40
  6. Step 6: Final answer
    x = 1,370,480.20

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.