Home / 907,312,989.78-1,252,043,350.82-499,931,055.19

Finding the Fourth Proportional to 907,312,989.78, 1,252,043,350.82 and 499,931,055.19

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Solution

The fourth proportional to 907,312,989.78, 1,252,043,350.82 and 499,931,055.19 is: 689,878,091.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    907,312,989.78 : 1,252,043,350.82 = 499,931,055.19 : x
  2. Step 2: Convert to fraction form
    907,312,989.78/1,252,043,350.82 = 499,931,055.19/x
  3. Step 3: Cross multiply
    907,312,989.78x = 1,252,043,350.82 × 499,931,055.19
  4. Step 4: Simplify right side
    907,312,989.78x = 625,935,353,519,065,856
  5. Step 5: Solve for x
    x = 625,935,353,519,065,856/907,312,989.78
  6. Step 6: Final answer
    x = 689,878,091.21

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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.