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Finding the Fourth Proportional to 562,702.70, 776,603.65 and 320,929.85

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Solution

The fourth proportional to 562,702.70, 776,603.65 and 320,929.85 is: 442,925.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,702.70 : 776,603.65 = 320,929.85 : x
  2. Step 2: Convert to fraction form
    562,702.70/776,603.65 = 320,929.85/x
  3. Step 3: Cross multiply
    562,702.70x = 776,603.65 × 320,929.85
  4. Step 4: Simplify right side
    562,702.70x = 249,235,292,903.95
  5. Step 5: Solve for x
    x = 249,235,292,903.95/562,702.70
  6. Step 6: Final answer
    x = 442,925.35

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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.