Home / 681,056,621.79-939,858,132.52-367,790,808.07

Finding the Fourth Proportional to 681,056,621.79, 939,858,132.52 and 367,790,808.07

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Solution

The fourth proportional to 681,056,621.79, 939,858,132.52 and 367,790,808.07 is: 507,551,312.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,056,621.79 : 939,858,132.52 = 367,790,808.07 : x
  2. Step 2: Convert to fraction form
    681,056,621.79/939,858,132.52 = 367,790,808.07/x
  3. Step 3: Cross multiply
    681,056,621.79x = 939,858,132.52 × 367,790,808.07
  4. Step 4: Simplify right side
    681,056,621.79x = 345,671,182,032,326,528
  5. Step 5: Solve for x
    x = 345,671,182,032,326,528/681,056,621.79
  6. Step 6: Final answer
    x = 507,551,312.14

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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.