Home / 501,980,699.03-692,750,187-278,971,780.10

Finding the Fourth Proportional to 501,980,699.03, 692,750,187 and 278,971,780.10

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Solution

The fourth proportional to 501,980,699.03, 692,750,187 and 278,971,780.10 is: 384,990,405.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,980,699.03 : 692,750,187 = 278,971,780.10 : x
  2. Step 2: Convert to fraction form
    501,980,699.03/692,750,187 = 278,971,780.10/x
  3. Step 3: Cross multiply
    501,980,699.03x = 692,750,187 × 278,971,780.10
  4. Step 4: Simplify right side
    501,980,699.03x = 193,257,752,828,534,144
  5. Step 5: Solve for x
    x = 193,257,752,828,534,144/501,980,699.03
  6. Step 6: Final answer
    x = 384,990,405.42

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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.