Home / 1,275,807.40-1,913,970.30-434,444.20

Finding the Fourth Proportional to 1,275,807.40, 1,913,970.30 and 434,444.20

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Solution

The fourth proportional to 1,275,807.40, 1,913,970.30 and 434,444.20 is: 651,754.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,275,807.40 : 1,913,970.30 = 434,444.20 : x
  2. Step 2: Convert to fraction form
    1,275,807.40/1,913,970.30 = 434,444.20/x
  3. Step 3: Cross multiply
    1,275,807.40x = 1,913,970.30 × 434,444.20
  4. Step 4: Simplify right side
    1,275,807.40x = 831,513,295,807.26
  5. Step 5: Solve for x
    x = 831,513,295,807.26/1,275,807.40
  6. Step 6: Final answer
    x = 651,754.56

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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.