Home / 859,201.95-1,288,968.89-326,681.60

Finding the Fourth Proportional to 859,201.95, 1,288,968.89 and 326,681.60

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Solution

The fourth proportional to 859,201.95, 1,288,968.89 and 326,681.60 is: 490,085.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,201.95 : 1,288,968.89 = 326,681.60 : x
  2. Step 2: Convert to fraction form
    859,201.95/1,288,968.89 = 326,681.60/x
  3. Step 3: Cross multiply
    859,201.95x = 1,288,968.89 × 326,681.60
  4. Step 4: Simplify right side
    859,201.95x = 421,082,411,257.17
  5. Step 5: Solve for x
    x = 421,082,411,257.17/859,201.95
  6. Step 6: Final answer
    x = 490,085.49

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1.5x scale

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.