Home / 520,020,807.10-780,031,210.65-174,859,719.10

Finding the Fourth Proportional to 520,020,807.10, 780,031,210.65 and 174,859,719.10

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Solution

The fourth proportional to 520,020,807.10, 780,031,210.65 and 174,859,719.10 is: 262,289,578.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,020,807.10 : 780,031,210.65 = 174,859,719.10 : x
  2. Step 2: Convert to fraction form
    520,020,807.10/780,031,210.65 = 174,859,719.10/x
  3. Step 3: Cross multiply
    520,020,807.10x = 780,031,210.65 × 174,859,719.10
  4. Step 4: Simplify right side
    520,020,807.10x = 136,396,038,383,491,920
  5. Step 5: Solve for x
    x = 136,396,038,383,491,920/520,020,807.10
  6. Step 6: Final answer
    x = 262,289,578.65

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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.