Home / 639,254,378.40-958,881,567.60-294,880,610.40

Finding the Fourth Proportional to 639,254,378.40, 958,881,567.60 and 294,880,610.40

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Solution

The fourth proportional to 639,254,378.40, 958,881,567.60 and 294,880,610.40 is: 442,320,915.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,254,378.40 : 958,881,567.60 = 294,880,610.40 : x
  2. Step 2: Convert to fraction form
    639,254,378.40/958,881,567.60 = 294,880,610.40/x
  3. Step 3: Cross multiply
    639,254,378.40x = 958,881,567.60 × 294,880,610.40
  4. Step 4: Simplify right side
    639,254,378.40x = 282,755,581,955,196,832
  5. Step 5: Solve for x
    x = 282,755,581,955,196,832/639,254,378.40
  6. Step 6: Final answer
    x = 442,320,915.60

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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.