Home / 712,476,243.15-1,068,714,364.73-425,821,779.15

Finding the Fourth Proportional to 712,476,243.15, 1,068,714,364.73 and 425,821,779.15

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Solution

The fourth proportional to 712,476,243.15, 1,068,714,364.73 and 425,821,779.15 is: 638,732,668.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,476,243.15 : 1,068,714,364.73 = 425,821,779.15 : x
  2. Step 2: Convert to fraction form
    712,476,243.15/1,068,714,364.73 = 425,821,779.15/x
  3. Step 3: Cross multiply
    712,476,243.15x = 1,068,714,364.73 × 425,821,779.15
  4. Step 4: Simplify right side
    712,476,243.15x = 455,081,852,190,361,472
  5. Step 5: Solve for x
    x = 455,081,852,190,361,472/712,476,243.15
  6. Step 6: Final answer
    x = 638,732,668.73

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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.