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Finding the Fourth Proportional to 508,728.56, 702,048.15 and 317,852.67

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Solution

The fourth proportional to 508,728.56, 702,048.15 and 317,852.67 is: 438,638.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,728.56 : 702,048.15 = 317,852.67 : x
  2. Step 2: Convert to fraction form
    508,728.56/702,048.15 = 317,852.67/x
  3. Step 3: Cross multiply
    508,728.56x = 702,048.15 × 317,852.67
  4. Step 4: Simplify right side
    508,728.56x = 223,147,878,946.06
  5. Step 5: Solve for x
    x = 223,147,878,946.06/508,728.56
  6. Step 6: Final answer
    x = 438,638.39

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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.