Home / 1,018,420.38-1,525,303.44-486,314.10

Finding the Fourth Proportional to 1,018,420.38, 1,525,303.44 and 486,314.10

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Solution

The fourth proportional to 1,018,420.38, 1,525,303.44 and 486,314.10 is: 728,359.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,018,420.38 : 1,525,303.44 = 486,314.10 : x
  2. Step 2: Convert to fraction form
    1,018,420.38/1,525,303.44 = 486,314.10/x
  3. Step 3: Cross multiply
    1,018,420.38x = 1,525,303.44 × 486,314.10
  4. Step 4: Simplify right side
    1,018,420.38x = 741,776,569,650.50
  5. Step 5: Solve for x
    x = 741,776,569,650.50/1,018,420.38
  6. Step 6: Final answer
    x = 728,359.90

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Double scale
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1.5x scale

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.