Home / 871,115,369.40-1,306,673,054.10-435,758,902.20

Finding the Fourth Proportional to 871,115,369.40, 1,306,673,054.10 and 435,758,902.20

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Solution

The fourth proportional to 871,115,369.40, 1,306,673,054.10 and 435,758,902.20 is: 653,638,353.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,115,369.40 : 1,306,673,054.10 = 435,758,902.20 : x
  2. Step 2: Convert to fraction form
    871,115,369.40/1,306,673,054.10 = 435,758,902.20/x
  3. Step 3: Cross multiply
    871,115,369.40x = 1,306,673,054.10 × 435,758,902.20
  4. Step 4: Simplify right side
    871,115,369.40x = 569,394,415,588,937,152
  5. Step 5: Solve for x
    x = 569,394,415,588,937,152/871,115,369.40
  6. Step 6: Final answer
    x = 653,638,353.30

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Double scale
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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.