Home / 626,911.48-865,148.16-354,972.21

Finding the Fourth Proportional to 626,911.48, 865,148.16 and 354,972.21

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Solution

The fourth proportional to 626,911.48, 865,148.16 and 354,972.21 is: 489,867.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,911.48 : 865,148.16 = 354,972.21 : x
  2. Step 2: Convert to fraction form
    626,911.48/865,148.16 = 354,972.21/x
  3. Step 3: Cross multiply
    626,911.48x = 865,148.16 × 354,972.21
  4. Step 4: Simplify right side
    626,911.48x = 307,103,554,332.63
  5. Step 5: Solve for x
    x = 307,103,554,332.63/626,911.48
  6. Step 6: Final answer
    x = 489,867.49

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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.