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Finding the Fourth Proportional to 562,590.50, 776,379.74 and 320,885.31

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Solution

The fourth proportional to 562,590.50, 776,379.74 and 320,885.31 is: 442,824.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,590.50 : 776,379.74 = 320,885.31 : x
  2. Step 2: Convert to fraction form
    562,590.50/776,379.74 = 320,885.31/x
  3. Step 3: Cross multiply
    562,590.50x = 776,379.74 × 320,885.31
  4. Step 4: Simplify right side
    562,590.50x = 249,128,854,854.62
  5. Step 5: Solve for x
    x = 249,128,854,854.62/562,590.50
  6. Step 6: Final answer
    x = 442,824.50

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1.5x scale

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.