Home / 520,063,687.38-780,363,732.51-243,742,973.86

Finding the Fourth Proportional to 520,063,687.38, 780,363,732.51 and 243,742,973.86

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Solution

The fourth proportional to 520,063,687.38, 780,363,732.51 and 243,742,973.86 is: 365,740,161.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,063,687.38 : 780,363,732.51 = 243,742,973.86 : x
  2. Step 2: Convert to fraction form
    520,063,687.38/780,363,732.51 = 243,742,973.86/x
  3. Step 3: Cross multiply
    520,063,687.38x = 780,363,732.51 × 243,742,973.86
  4. Step 4: Simplify right side
    520,063,687.38x = 190,208,176,850,575,136
  5. Step 5: Solve for x
    x = 190,208,176,850,575,136/520,063,687.38
  6. Step 6: Final answer
    x = 365,740,161.19

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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.