Home / 812,792,103.39-1,121,683,875.93-455,566,424.40

Finding the Fourth Proportional to 812,792,103.39, 1,121,683,875.93 and 455,566,424.40

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Solution

The fourth proportional to 812,792,103.39, 1,121,683,875.93 and 455,566,424.40 is: 628,698,913.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,792,103.39 : 1,121,683,875.93 = 455,566,424.40 : x
  2. Step 2: Convert to fraction form
    812,792,103.39/1,121,683,875.93 = 455,566,424.40/x
  3. Step 3: Cross multiply
    812,792,103.39x = 1,121,683,875.93 × 455,566,424.40
  4. Step 4: Simplify right side
    812,792,103.39x = 511,001,512,664,563,328
  5. Step 5: Solve for x
    x = 511,001,512,664,563,328/812,792,103.39
  6. Step 6: Final answer
    x = 628,698,913.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.