Home / 1,209,345.10-1,668,904.08-665,465.60

Finding the Fourth Proportional to 1,209,345.10, 1,668,904.08 and 665,465.60

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Solution

The fourth proportional to 1,209,345.10, 1,668,904.08 and 665,465.60 is: 918,346.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,345.10 : 1,668,904.08 = 665,465.60 : x
  2. Step 2: Convert to fraction form
    1,209,345.10/1,668,904.08 = 665,465.60/x
  3. Step 3: Cross multiply
    1,209,345.10x = 1,668,904.08 × 665,465.60
  4. Step 4: Simplify right side
    1,209,345.10x = 1,110,598,254,939.65
  5. Step 5: Solve for x
    x = 1,110,598,254,939.65/1,209,345.10
  6. Step 6: Final answer
    x = 918,346.84

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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.