Home / 900,571,881.90-1,242,801,887.10-518,882,967.72

Finding the Fourth Proportional to 900,571,881.90, 1,242,801,887.10 and 518,882,967.72

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Solution

The fourth proportional to 900,571,881.90, 1,242,801,887.10 and 518,882,967.72 is: 716,065,807.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,571,881.90 : 1,242,801,887.10 = 518,882,967.72 : x
  2. Step 2: Convert to fraction form
    900,571,881.90/1,242,801,887.10 = 518,882,967.72/x
  3. Step 3: Cross multiply
    900,571,881.90x = 1,242,801,887.10 × 518,882,967.72
  4. Step 4: Simplify right side
    900,571,881.90x = 644,868,731,466,464,384
  5. Step 5: Solve for x
    x = 644,868,731,466,464,384/900,571,881.90
  6. Step 6: Final answer
    x = 716,065,807.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.