Home / 1,405,871.40-2,108,807.10-647,711.40

Finding the Fourth Proportional to 1,405,871.40, 2,108,807.10 and 647,711.40

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Solution

The fourth proportional to 1,405,871.40, 2,108,807.10 and 647,711.40 is: 971,567.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,405,871.40 : 2,108,807.10 = 647,711.40 : x
  2. Step 2: Convert to fraction form
    1,405,871.40/2,108,807.10 = 647,711.40/x
  3. Step 3: Cross multiply
    1,405,871.40x = 2,108,807.10 × 647,711.40
  4. Step 4: Simplify right side
    1,405,871.40x = 1,365,898,399,070.94
  5. Step 5: Solve for x
    x = 1,365,898,399,070.94/1,405,871.40
  6. Step 6: Final answer
    x = 971,567.10

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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.