Home / 1,020,215.32-1,407,868.10-561,330.20

Finding the Fourth Proportional to 1,020,215.32, 1,407,868.10 and 561,330.20

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Solution

The fourth proportional to 1,020,215.32, 1,407,868.10 and 561,330.20 is: 774,619.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,020,215.32 : 1,407,868.10 = 561,330.20 : x
  2. Step 2: Convert to fraction form
    1,020,215.32/1,407,868.10 = 561,330.20/x
  3. Step 3: Cross multiply
    1,020,215.32x = 1,407,868.10 × 561,330.20
  4. Step 4: Simplify right side
    1,020,215.32x = 790,278,883,906.46
  5. Step 5: Solve for x
    x = 790,278,883,906.46/1,020,215.32
  6. Step 6: Final answer
    x = 774,619.70

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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.