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Finding the Fourth Proportional to 987,476.76, 1,362,690 and 585,068.76

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Solution

The fourth proportional to 987,476.76, 1,362,690 and 585,068.76 is: 807,378.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,476.76 : 1,362,690 = 585,068.76 : x
  2. Step 2: Convert to fraction form
    987,476.76/1,362,690 = 585,068.76/x
  3. Step 3: Cross multiply
    987,476.76x = 1,362,690 × 585,068.76
  4. Step 4: Simplify right side
    987,476.76x = 797,267,348,564.40
  5. Step 5: Solve for x
    x = 797,267,348,564.40/987,476.76
  6. Step 6: Final answer
    x = 807,378.34

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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.