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Finding the Fourth Proportional to 805,718.40, 1,209,452.40 and 506,536.80

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Solution

The fourth proportional to 805,718.40, 1,209,452.40 and 506,536.80 is: 760,355.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,718.40 : 1,209,452.40 = 506,536.80 : x
  2. Step 2: Convert to fraction form
    805,718.40/1,209,452.40 = 506,536.80/x
  3. Step 3: Cross multiply
    805,718.40x = 1,209,452.40 × 506,536.80
  4. Step 4: Simplify right side
    805,718.40x = 612,632,148,448.32
  5. Step 5: Solve for x
    x = 612,632,148,448.32/805,718.40
  6. Step 6: Final answer
    x = 760,355.17

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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.