Home / 686,779,430.40-1,029,815,251.20-255,736,051.20

Finding the Fourth Proportional to 686,779,430.40, 1,029,815,251.20 and 255,736,051.20

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Solution

The fourth proportional to 686,779,430.40, 1,029,815,251.20 and 255,736,051.20 is: 383,472,297.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,779,430.40 : 1,029,815,251.20 = 255,736,051.20 : x
  2. Step 2: Convert to fraction form
    686,779,430.40/1,029,815,251.20 = 255,736,051.20/x
  3. Step 3: Cross multiply
    686,779,430.40x = 1,029,815,251.20 × 255,736,051.20
  4. Step 4: Simplify right side
    686,779,430.40x = 263,360,885,807,424,064
  5. Step 5: Solve for x
    x = 263,360,885,807,424,064/686,779,430.40
  6. Step 6: Final answer
    x = 383,472,297.15

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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.