Home / 638,972,868.80-958,459,303.20-570,098,115.20

Finding the Fourth Proportional to 638,972,868.80, 958,459,303.20 and 570,098,115.20

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Solution

The fourth proportional to 638,972,868.80, 958,459,303.20 and 570,098,115.20 is: 855,147,172.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,972,868.80 : 958,459,303.20 = 570,098,115.20 : x
  2. Step 2: Convert to fraction form
    638,972,868.80/958,459,303.20 = 570,098,115.20/x
  3. Step 3: Cross multiply
    638,972,868.80x = 958,459,303.20 × 570,098,115.20
  4. Step 4: Simplify right side
    638,972,868.80x = 546,415,842,250,225,408
  5. Step 5: Solve for x
    x = 546,415,842,250,225,408/638,972,868.80
  6. Step 6: Final answer
    x = 855,147,172.80

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Double scale
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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.