Home / 628,897,031.80-943,345,547.70-399,881,390.20

Finding the Fourth Proportional to 628,897,031.80, 943,345,547.70 and 399,881,390.20

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Solution

The fourth proportional to 628,897,031.80, 943,345,547.70 and 399,881,390.20 is: 599,822,085.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,897,031.80 : 943,345,547.70 = 399,881,390.20 : x
  2. Step 2: Convert to fraction form
    628,897,031.80/943,345,547.70 = 399,881,390.20/x
  3. Step 3: Cross multiply
    628,897,031.80x = 943,345,547.70 × 399,881,390.20
  4. Step 4: Simplify right side
    628,897,031.80x = 377,226,329,053,256,448
  5. Step 5: Solve for x
    x = 377,226,329,053,256,448/628,897,031.80
  6. Step 6: Final answer
    x = 599,822,085.30

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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.