Home / 879,639.76-1,213,897.80-477,223.12

Finding the Fourth Proportional to 879,639.76, 1,213,897.80 and 477,223.12

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Solution

The fourth proportional to 879,639.76, 1,213,897.80 and 477,223.12 is: 658,565.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,639.76 : 1,213,897.80 = 477,223.12 : x
  2. Step 2: Convert to fraction form
    879,639.76/1,213,897.80 = 477,223.12/x
  3. Step 3: Cross multiply
    879,639.76x = 1,213,897.80 × 477,223.12
  4. Step 4: Simplify right side
    879,639.76x = 579,300,095,477.14
  5. Step 5: Solve for x
    x = 579,300,095,477.14/879,639.76
  6. Step 6: Final answer
    x = 658,565.16

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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.