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Finding the Fourth Proportional to 759,951, 1,048,641.66 and 420,373.08

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Solution

The fourth proportional to 759,951, 1,048,641.66 and 420,373.08 is: 580,064.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    759,951 : 1,048,641.66 = 420,373.08 : x
  2. Step 2: Convert to fraction form
    759,951/1,048,641.66 = 420,373.08/x
  3. Step 3: Cross multiply
    759,951x = 1,048,641.66 × 420,373.08
  4. Step 4: Simplify right side
    759,951x = 440,820,724,430.51
  5. Step 5: Solve for x
    x = 440,820,724,430.51/759,951
  6. Step 6: Final answer
    x = 580,064.67

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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.