Home / 1,320,931.60-1,980,085.20-609,719.20

Finding the Fourth Proportional to 1,320,931.60, 1,980,085.20 and 609,719.20

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Solution

The fourth proportional to 1,320,931.60, 1,980,085.20 and 609,719.20 is: 913,973.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,931.60 : 1,980,085.20 = 609,719.20 : x
  2. Step 2: Convert to fraction form
    1,320,931.60/1,980,085.20 = 609,719.20/x
  3. Step 3: Cross multiply
    1,320,931.60x = 1,980,085.20 × 609,719.20
  4. Step 4: Simplify right side
    1,320,931.60x = 1,207,295,964,075.84
  5. Step 5: Solve for x
    x = 1,207,295,964,075.84/1,320,931.60
  6. Step 6: Final answer
    x = 913,973.11

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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.