Home / 489,278.24-676,536-426,292.64

Finding the Fourth Proportional to 489,278.24, 676,536 and 426,292.64

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Solution

The fourth proportional to 489,278.24, 676,536 and 426,292.64 is: 589,444.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,278.24 : 676,536 = 426,292.64 : x
  2. Step 2: Convert to fraction form
    489,278.24/676,536 = 426,292.64/x
  3. Step 3: Cross multiply
    489,278.24x = 676,536 × 426,292.64
  4. Step 4: Simplify right side
    489,278.24x = 288,402,317,495.04
  5. Step 5: Solve for x
    x = 288,402,317,495.04/489,278.24
  6. Step 6: Final answer
    x = 589,444.40

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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.