Home / 877,845.88-1,316,805.41-428,031.01

Finding the Fourth Proportional to 877,845.88, 1,316,805.41 and 428,031.01

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Solution

The fourth proportional to 877,845.88, 1,316,805.41 and 428,031.01 is: 642,064.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,845.88 : 1,316,805.41 = 428,031.01 : x
  2. Step 2: Convert to fraction form
    877,845.88/1,316,805.41 = 428,031.01/x
  3. Step 3: Cross multiply
    877,845.88x = 1,316,805.41 × 428,031.01
  4. Step 4: Simplify right side
    877,845.88x = 563,633,549,615.76
  5. Step 5: Solve for x
    x = 563,633,549,615.76/877,845.88
  6. Step 6: Final answer
    x = 642,064.36

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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.