Home / 1,209,283.16-1,668,822.61-665,430.65

Finding the Fourth Proportional to 1,209,283.16, 1,668,822.61 and 665,430.65

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Solution

The fourth proportional to 1,209,283.16, 1,668,822.61 and 665,430.65 is: 918,300.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,283.16 : 1,668,822.61 = 665,430.65 : x
  2. Step 2: Convert to fraction form
    1,209,283.16/1,668,822.61 = 665,430.65/x
  3. Step 3: Cross multiply
    1,209,283.16x = 1,668,822.61 × 665,430.65
  4. Step 4: Simplify right side
    1,209,283.16x = 1,110,485,716,615.48
  5. Step 5: Solve for x
    x = 1,110,485,716,615.48/1,209,283.16
  6. Step 6: Final answer
    x = 918,300.82

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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.