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Finding the Fourth Proportional to 570,153.48, 786,292.02 and 489,555.72

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Solution

The fourth proportional to 570,153.48, 786,292.02 and 489,555.72 is: 675,140.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,153.48 : 786,292.02 = 489,555.72 : x
  2. Step 2: Convert to fraction form
    570,153.48/786,292.02 = 489,555.72/x
  3. Step 3: Cross multiply
    570,153.48x = 786,292.02 × 489,555.72
  4. Step 4: Simplify right side
    570,153.48x = 384,933,755,981.35
  5. Step 5: Solve for x
    x = 384,933,755,981.35/570,153.48
  6. Step 6: Final answer
    x = 675,140.59

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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.