Home / 1,565,918.69-2,160,931.03-921,380.63

Finding the Fourth Proportional to 1,565,918.69, 2,160,931.03 and 921,380.63

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Solution

The fourth proportional to 1,565,918.69, 2,160,931.03 and 921,380.63 is: 1,271,483.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,565,918.69 : 2,160,931.03 = 921,380.63 : x
  2. Step 2: Convert to fraction form
    1,565,918.69/2,160,931.03 = 921,380.63/x
  3. Step 3: Cross multiply
    1,565,918.69x = 2,160,931.03 × 921,380.63
  4. Step 4: Simplify right side
    1,565,918.69x = 1,991,039,993,807.95
  5. Step 5: Solve for x
    x = 1,991,039,993,807.95/1,565,918.69
  6. Step 6: Final answer
    x = 1,271,483.64

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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.