Home / 1,315,436.90-1,815,289.13-742,501.22

Finding the Fourth Proportional to 1,315,436.90, 1,815,289.13 and 742,501.22

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Solution

The fourth proportional to 1,315,436.90, 1,815,289.13 and 742,501.22 is: 1,024,643.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,436.90 : 1,815,289.13 = 742,501.22 : x
  2. Step 2: Convert to fraction form
    1,315,436.90/1,815,289.13 = 742,501.22/x
  3. Step 3: Cross multiply
    1,315,436.90x = 1,815,289.13 × 742,501.22
  4. Step 4: Simplify right side
    1,315,436.90x = 1,347,854,386,457.55
  5. Step 5: Solve for x
    x = 1,347,854,386,457.55/1,315,436.90
  6. Step 6: Final answer
    x = 1,024,643.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.