Home / 708,971.76-1,062,859.86-309,319.40

Finding the Fourth Proportional to 708,971.76, 1,062,859.86 and 309,319.40

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Solution

The fourth proportional to 708,971.76, 1,062,859.86 and 309,319.40 is: 463,718.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,971.76 : 1,062,859.86 = 309,319.40 : x
  2. Step 2: Convert to fraction form
    708,971.76/1,062,859.86 = 309,319.40/x
  3. Step 3: Cross multiply
    708,971.76x = 1,062,859.86 × 309,319.40
  4. Step 4: Simplify right side
    708,971.76x = 328,763,174,179.28
  5. Step 5: Solve for x
    x = 328,763,174,179.28/708,971.76
  6. Step 6: Final answer
    x = 463,718.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.