Home / 1,289,643.61-1,931,499.37-748,559.81

Finding the Fourth Proportional to 1,289,643.61, 1,931,499.37 and 748,559.81

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Solution

The fourth proportional to 1,289,643.61, 1,931,499.37 and 748,559.81 is: 1,121,118.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,643.61 : 1,931,499.37 = 748,559.81 : x
  2. Step 2: Convert to fraction form
    1,289,643.61/1,931,499.37 = 748,559.81/x
  3. Step 3: Cross multiply
    1,289,643.61x = 1,931,499.37 × 748,559.81
  4. Step 4: Simplify right side
    1,289,643.61x = 1,445,842,804,379.67
  5. Step 5: Solve for x
    x = 1,445,842,804,379.67/1,289,643.61
  6. Step 6: Final answer
    x = 1,121,118.11

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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.