Home / 907,312,988.78-1,252,043,349.44-499,931,054.19

Finding the Fourth Proportional to 907,312,988.78, 1,252,043,349.44 and 499,931,054.19

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Solution

The fourth proportional to 907,312,988.78, 1,252,043,349.44 and 499,931,054.19 is: 689,878,089.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    907,312,988.78 : 1,252,043,349.44 = 499,931,054.19 : x
  2. Step 2: Convert to fraction form
    907,312,988.78/1,252,043,349.44 = 499,931,054.19/x
  3. Step 3: Cross multiply
    907,312,988.78x = 1,252,043,349.44 × 499,931,054.19
  4. Step 4: Simplify right side
    907,312,988.78x = 625,935,351,578,367,616
  5. Step 5: Solve for x
    x = 625,935,351,578,367,616/907,312,988.78
  6. Step 6: Final answer
    x = 689,878,089.83

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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.