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Finding the Fourth Proportional to 508,746.10, 702,072.33 and 317,870.20

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Solution

The fourth proportional to 508,746.10, 702,072.33 and 317,870.20 is: 438,662.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,746.10 : 702,072.33 = 317,870.20 : x
  2. Step 2: Convert to fraction form
    508,746.10/702,072.33 = 317,870.20/x
  3. Step 3: Cross multiply
    508,746.10x = 702,072.33 × 317,870.20
  4. Step 4: Simplify right side
    508,746.10x = 223,167,871,951.57
  5. Step 5: Solve for x
    x = 223,167,871,951.57/508,746.10
  6. Step 6: Final answer
    x = 438,662.57

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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.