Home / 1,243,651.40-1,865,477.10-402,288.20

Finding the Fourth Proportional to 1,243,651.40, 1,865,477.10 and 402,288.20

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Solution

The fourth proportional to 1,243,651.40, 1,865,477.10 and 402,288.20 is: 603,432.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,243,651.40 : 1,865,477.10 = 402,288.20 : x
  2. Step 2: Convert to fraction form
    1,243,651.40/1,865,477.10 = 402,288.20/x
  3. Step 3: Cross multiply
    1,243,651.40x = 1,865,477.10 × 402,288.20
  4. Step 4: Simplify right side
    1,243,651.40x = 750,459,424,700.22
  5. Step 5: Solve for x
    x = 750,459,424,700.22/1,243,651.40
  6. Step 6: Final answer
    x = 603,432.30

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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.