Home / 1,211,114,920.78-1,671,339,263.43-654,197,972.50

Finding the Fourth Proportional to 1,211,114,920.78, 1,671,339,263.43 and 654,197,972.50

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Solution

The fourth proportional to 1,211,114,920.78, 1,671,339,263.43 and 654,197,972.50 is: 902,793,565.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,114,920.78 : 1,671,339,263.43 = 654,197,972.50 : x
  2. Step 2: Convert to fraction form
    1,211,114,920.78/1,671,339,263.43 = 654,197,972.50/x
  3. Step 3: Cross multiply
    1,211,114,920.78x = 1,671,339,263.43 × 654,197,972.50
  4. Step 4: Simplify right side
    1,211,114,920.78x = 1,093,386,757,495,549,440
  5. Step 5: Solve for x
    x = 1,093,386,757,495,549,440/1,211,114,920.78
  6. Step 6: Final answer
    x = 902,793,565.45

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Double scale
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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.