Home / 926,938.40-1,390,407.60-821,962.40

Finding the Fourth Proportional to 926,938.40, 1,390,407.60 and 821,962.40

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Solution

The fourth proportional to 926,938.40, 1,390,407.60 and 821,962.40 is: 1,232,943.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    926,938.40 : 1,390,407.60 = 821,962.40 : x
  2. Step 2: Convert to fraction form
    926,938.40/1,390,407.60 = 821,962.40/x
  3. Step 3: Cross multiply
    926,938.40x = 1,390,407.60 × 821,962.40
  4. Step 4: Simplify right side
    926,938.40x = 1,142,862,767,874.24
  5. Step 5: Solve for x
    x = 1,142,862,767,874.24/926,938.40
  6. Step 6: Final answer
    x = 1,232,943.60

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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.