Home / 1,121,389.84-1,547,951.88-668,714.32

Finding the Fourth Proportional to 1,121,389.84, 1,547,951.88 and 668,714.32

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Solution

The fourth proportional to 1,121,389.84, 1,547,951.88 and 668,714.32 is: 923,084.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,389.84 : 1,547,951.88 = 668,714.32 : x
  2. Step 2: Convert to fraction form
    1,121,389.84/1,547,951.88 = 668,714.32/x
  3. Step 3: Cross multiply
    1,121,389.84x = 1,547,951.88 × 668,714.32
  4. Step 4: Simplify right side
    1,121,389.84x = 1,035,137,588,826.92
  5. Step 5: Solve for x
    x = 1,035,137,588,826.92/1,121,389.84
  6. Step 6: Final answer
    x = 923,084.51

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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.