Home / 1,209,335.95-1,668,880.29-665,507.01

Finding the Fourth Proportional to 1,209,335.95, 1,668,880.29 and 665,507.01

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Solution

The fourth proportional to 1,209,335.95, 1,668,880.29 and 665,507.01 is: 918,397.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,335.95 : 1,668,880.29 = 665,507.01 : x
  2. Step 2: Convert to fraction form
    1,209,335.95/1,668,880.29 = 665,507.01/x
  3. Step 3: Cross multiply
    1,209,335.95x = 1,668,880.29 × 665,507.01
  4. Step 4: Simplify right side
    1,209,335.95x = 1,110,651,531,845.83
  5. Step 5: Solve for x
    x = 1,110,651,531,845.83/1,209,335.95
  6. Step 6: Final answer
    x = 918,397.85

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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.