Home / 1,031,981.40-1,547,972.10-990,647.10

Finding the Fourth Proportional to 1,031,981.40, 1,547,972.10 and 990,647.10

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Solution

The fourth proportional to 1,031,981.40, 1,547,972.10 and 990,647.10 is: 1,485,970.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,031,981.40 : 1,547,972.10 = 990,647.10 : x
  2. Step 2: Convert to fraction form
    1,031,981.40/1,547,972.10 = 990,647.10/x
  3. Step 3: Cross multiply
    1,031,981.40x = 1,547,972.10 × 990,647.10
  4. Step 4: Simplify right side
    1,031,981.40x = 1,533,494,071,745.91
  5. Step 5: Solve for x
    x = 1,533,494,071,745.91/1,031,981.40
  6. Step 6: Final answer
    x = 1,485,970.65

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Double scale
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Similar ratio
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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.