Home / 879,711.40-1,214,007.78-477,303.40

Finding the Fourth Proportional to 879,711.40, 1,214,007.78 and 477,303.40

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Solution

The fourth proportional to 879,711.40, 1,214,007.78 and 477,303.40 is: 658,681.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,711.40 : 1,214,007.78 = 477,303.40 : x
  2. Step 2: Convert to fraction form
    879,711.40/1,214,007.78 = 477,303.40/x
  3. Step 3: Cross multiply
    879,711.40x = 1,214,007.78 × 477,303.40
  4. Step 4: Simplify right side
    879,711.40x = 579,450,041,020.45
  5. Step 5: Solve for x
    x = 579,450,041,020.45/879,711.40
  6. Step 6: Final answer
    x = 658,681.97

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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.