Home / 639,988,374.54-883,255,632.81-361,547,834.21

Finding the Fourth Proportional to 639,988,374.54, 883,255,632.81 and 361,547,834.21

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Solution

The fourth proportional to 639,988,374.54, 883,255,632.81 and 361,547,834.21 is: 498,976,503.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,988,374.54 : 883,255,632.81 = 361,547,834.21 : x
  2. Step 2: Convert to fraction form
    639,988,374.54/883,255,632.81 = 361,547,834.21/x
  3. Step 3: Cross multiply
    639,988,374.54x = 883,255,632.81 × 361,547,834.21
  4. Step 4: Simplify right side
    639,988,374.54x = 319,339,161,091,822,208
  5. Step 5: Solve for x
    x = 319,339,161,091,822,208/639,988,374.54
  6. Step 6: Final answer
    x = 498,976,503.00

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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.