Home / 891,274.18-1,230,115.59-528,897.85

Finding the Fourth Proportional to 891,274.18, 1,230,115.59 and 528,897.85

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Solution

The fourth proportional to 891,274.18, 1,230,115.59 and 528,897.85 is: 729,972.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,274.18 : 1,230,115.59 = 528,897.85 : x
  2. Step 2: Convert to fraction form
    891,274.18/1,230,115.59 = 528,897.85/x
  3. Step 3: Cross multiply
    891,274.18x = 1,230,115.59 × 528,897.85
  4. Step 4: Simplify right side
    891,274.18x = 650,605,490,802.48
  5. Step 5: Solve for x
    x = 650,605,490,802.48/891,274.18
  6. Step 6: Final answer
    x = 729,972.33

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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.