Home / 485,547.12-670,042.08-281,585.34

Finding the Fourth Proportional to 485,547.12, 670,042.08 and 281,585.34

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Solution

The fourth proportional to 485,547.12, 670,042.08 and 281,585.34 is: 388,580.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,547.12 : 670,042.08 = 281,585.34 : x
  2. Step 2: Convert to fraction form
    485,547.12/670,042.08 = 281,585.34/x
  3. Step 3: Cross multiply
    485,547.12x = 670,042.08 × 281,585.34
  4. Step 4: Simplify right side
    485,547.12x = 188,674,026,911.11
  5. Step 5: Solve for x
    x = 188,674,026,911.11/485,547.12
  6. Step 6: Final answer
    x = 388,580.26

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1.5x scale

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.