Home / 679,569.60-1,018,479.60-521,012.10

Finding the Fourth Proportional to 679,569.60, 1,018,479.60 and 521,012.10

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Solution

The fourth proportional to 679,569.60, 1,018,479.60 and 521,012.10 is: 780,847.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,569.60 : 1,018,479.60 = 521,012.10 : x
  2. Step 2: Convert to fraction form
    679,569.60/1,018,479.60 = 521,012.10/x
  3. Step 3: Cross multiply
    679,569.60x = 1,018,479.60 × 521,012.10
  4. Step 4: Simplify right side
    679,569.60x = 530,640,195,203.16
  5. Step 5: Solve for x
    x = 530,640,195,203.16/679,569.60
  6. Step 6: Final answer
    x = 780,847.46

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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.