Home / 879,400.23-1,214,329.70-553,256.86

Finding the Fourth Proportional to 879,400.23, 1,214,329.70 and 553,256.86

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Solution

The fourth proportional to 879,400.23, 1,214,329.70 and 553,256.86 is: 763,970.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,400.23 : 1,214,329.70 = 553,256.86 : x
  2. Step 2: Convert to fraction form
    879,400.23/1,214,329.70 = 553,256.86/x
  3. Step 3: Cross multiply
    879,400.23x = 1,214,329.70 × 553,256.86
  4. Step 4: Simplify right side
    879,400.23x = 671,836,236,826.74
  5. Step 5: Solve for x
    x = 671,836,236,826.74/879,400.23
  6. Step 6: Final answer
    x = 763,970.96

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1.5x scale

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.