Home / 520,020,781.60-780,031,172.40-174,859,693.60

Finding the Fourth Proportional to 520,020,781.60, 780,031,172.40 and 174,859,693.60

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Solution

The fourth proportional to 520,020,781.60, 780,031,172.40 and 174,859,693.60 is: 262,289,540.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,020,781.60 : 780,031,172.40 = 174,859,693.60 : x
  2. Step 2: Convert to fraction form
    520,020,781.60/780,031,172.40 = 174,859,693.60/x
  3. Step 3: Cross multiply
    520,020,781.60x = 780,031,172.40 × 174,859,693.60
  4. Step 4: Simplify right side
    520,020,781.60x = 136,396,011,804,312,768
  5. Step 5: Solve for x
    x = 136,396,011,804,312,768/520,020,781.60
  6. Step 6: Final answer
    x = 262,289,540.40

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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.