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Finding the Fourth Proportional to 638,971,973.30, 958,457,959.95 and 570,097,219.70

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Solution

The fourth proportional to 638,971,973.30, 958,457,959.95 and 570,097,219.70 is: 855,145,829.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,971,973.30 : 958,457,959.95 = 570,097,219.70 : x
  2. Step 2: Convert to fraction form
    638,971,973.30/958,457,959.95 = 570,097,219.70/x
  3. Step 3: Cross multiply
    638,971,973.30x = 958,457,959.95 × 570,097,219.70
  4. Step 4: Simplify right side
    638,971,973.30x = 546,414,218,166,828,992
  5. Step 5: Solve for x
    x = 546,414,218,166,828,992/638,971,973.30
  6. Step 6: Final answer
    x = 855,145,829.55

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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.