Home / 1,210,643.04-1,670,666.80-666,829.76

Finding the Fourth Proportional to 1,210,643.04, 1,670,666.80 and 666,829.76

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Solution

The fourth proportional to 1,210,643.04, 1,670,666.80 and 666,829.76 is: 920,213.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,643.04 : 1,670,666.80 = 666,829.76 : x
  2. Step 2: Convert to fraction form
    1,210,643.04/1,670,666.80 = 666,829.76/x
  3. Step 3: Cross multiply
    1,210,643.04x = 1,670,666.80 × 666,829.76
  4. Step 4: Simplify right side
    1,210,643.04x = 1,114,050,341,283.97
  5. Step 5: Solve for x
    x = 1,114,050,341,283.97/1,210,643.04
  6. Step 6: Final answer
    x = 920,213.72

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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.