Home / 1,275,806.40-1,913,968.80-434,443.20

Finding the Fourth Proportional to 1,275,806.40, 1,913,968.80 and 434,443.20

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Solution

The fourth proportional to 1,275,806.40, 1,913,968.80 and 434,443.20 is: 651,753.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,275,806.40 : 1,913,968.80 = 434,443.20 : x
  2. Step 2: Convert to fraction form
    1,275,806.40/1,913,968.80 = 434,443.20/x
  3. Step 3: Cross multiply
    1,275,806.40x = 1,913,968.80 × 434,443.20
  4. Step 4: Simplify right side
    1,275,806.40x = 831,510,730,172.16
  5. Step 5: Solve for x
    x = 831,510,730,172.16/1,275,806.40
  6. Step 6: Final answer
    x = 651,753.06

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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.