Home / 1,210,670.15-1,670,657.81-666,703.31

Finding the Fourth Proportional to 1,210,670.15, 1,670,657.81 and 666,703.31

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Solution

The fourth proportional to 1,210,670.15, 1,670,657.81 and 666,703.31 is: 920,013.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,670.15 : 1,670,657.81 = 666,703.31 : x
  2. Step 2: Convert to fraction form
    1,210,670.15/1,670,657.81 = 666,703.31/x
  3. Step 3: Cross multiply
    1,210,670.15x = 1,670,657.81 × 666,703.31
  4. Step 4: Simplify right side
    1,210,670.15x = 1,113,833,080,117.55
  5. Step 5: Solve for x
    x = 1,113,833,080,117.55/1,210,670.15
  6. Step 6: Final answer
    x = 920,013.67

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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.