Home / 830,007.40-1,145,395.14-467,429.80

Finding the Fourth Proportional to 830,007.40, 1,145,395.14 and 467,429.80

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Solution

The fourth proportional to 830,007.40, 1,145,395.14 and 467,429.80 is: 645,044.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,007.40 : 1,145,395.14 = 467,429.80 : x
  2. Step 2: Convert to fraction form
    830,007.40/1,145,395.14 = 467,429.80/x
  3. Step 3: Cross multiply
    830,007.40x = 1,145,395.14 × 467,429.80
  4. Step 4: Simplify right side
    830,007.40x = 535,391,821,211.17
  5. Step 5: Solve for x
    x = 535,391,821,211.17/830,007.40
  6. Step 6: Final answer
    x = 645,044.64

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Double scale
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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.