Home / 626,128,214.40-939,192,321.60-393,333,436.80

Finding the Fourth Proportional to 626,128,214.40, 939,192,321.60 and 393,333,436.80

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Solution

The fourth proportional to 626,128,214.40, 939,192,321.60 and 393,333,436.80 is: 590,000,155.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,128,214.40 : 939,192,321.60 = 393,333,436.80 : x
  2. Step 2: Convert to fraction form
    626,128,214.40/939,192,321.60 = 393,333,436.80/x
  3. Step 3: Cross multiply
    626,128,214.40x = 939,192,321.60 × 393,333,436.80
  4. Step 4: Simplify right side
    626,128,214.40x = 369,415,743,671,098,880
  5. Step 5: Solve for x
    x = 369,415,743,671,098,880/626,128,214.40
  6. Step 6: Final answer
    x = 590,000,155.20

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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.