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Finding the Fourth Proportional to 692,401.50, 955,547.08 and 390,595.50

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Solution

The fourth proportional to 692,401.50, 955,547.08 and 390,595.50 is: 539,040.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,401.50 : 955,547.08 = 390,595.50 : x
  2. Step 2: Convert to fraction form
    692,401.50/955,547.08 = 390,595.50/x
  3. Step 3: Cross multiply
    692,401.50x = 955,547.08 × 390,595.50
  4. Step 4: Simplify right side
    692,401.50x = 373,232,388,509.65
  5. Step 5: Solve for x
    x = 373,232,388,509.65/692,401.50
  6. Step 6: Final answer
    x = 539,040.41

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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.