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Finding the Fourth Proportional to 786,690.40, 1,179,344.40 and 471,272.80

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Solution

The fourth proportional to 786,690.40, 1,179,344.40 and 471,272.80 is: 706,495.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,690.40 : 1,179,344.40 = 471,272.80 : x
  2. Step 2: Convert to fraction form
    786,690.40/1,179,344.40 = 471,272.80/x
  3. Step 3: Cross multiply
    786,690.40x = 1,179,344.40 × 471,272.80
  4. Step 4: Simplify right side
    786,690.40x = 555,792,937,552.32
  5. Step 5: Solve for x
    x = 555,792,937,552.32/786,690.40
  6. Step 6: Final answer
    x = 706,495.13

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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.