Home / 1,020,715.40-1,531,073.10-489,274.40

Finding the Fourth Proportional to 1,020,715.40, 1,531,073.10 and 489,274.40

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Solution

The fourth proportional to 1,020,715.40, 1,531,073.10 and 489,274.40 is: 733,911.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,020,715.40 : 1,531,073.10 = 489,274.40 : x
  2. Step 2: Convert to fraction form
    1,020,715.40/1,531,073.10 = 489,274.40/x
  3. Step 3: Cross multiply
    1,020,715.40x = 1,531,073.10 × 489,274.40
  4. Step 4: Simplify right side
    1,020,715.40x = 749,114,872,358.64
  5. Step 5: Solve for x
    x = 749,114,872,358.64/1,020,715.40
  6. Step 6: Final answer
    x = 733,911.60

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Double scale
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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.