Home / 898,459.80-1,347,689.70-721,312.80

Finding the Fourth Proportional to 898,459.80, 1,347,689.70 and 721,312.80

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Solution

The fourth proportional to 898,459.80, 1,347,689.70 and 721,312.80 is: 1,081,969.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    898,459.80 : 1,347,689.70 = 721,312.80 : x
  2. Step 2: Convert to fraction form
    898,459.80/1,347,689.70 = 721,312.80/x
  3. Step 3: Cross multiply
    898,459.80x = 1,347,689.70 × 721,312.80
  4. Step 4: Simplify right side
    898,459.80x = 972,105,831,038.16
  5. Step 5: Solve for x
    x = 972,105,831,038.16/898,459.80
  6. Step 6: Final answer
    x = 1,081,969.20

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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.