Home / 612,734.79-919,963.32-313,430.18

Finding the Fourth Proportional to 612,734.79, 919,963.32 and 313,430.18

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Solution

The fourth proportional to 612,734.79, 919,963.32 and 313,430.18 is: 470,585.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,734.79 : 919,963.32 = 313,430.18 : x
  2. Step 2: Convert to fraction form
    612,734.79/919,963.32 = 313,430.18/x
  3. Step 3: Cross multiply
    612,734.79x = 919,963.32 × 313,430.18
  4. Step 4: Simplify right side
    612,734.79x = 288,344,268,981.00
  5. Step 5: Solve for x
    x = 288,344,268,981.00/612,734.79
  6. Step 6: Final answer
    x = 470,585.76

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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.