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Finding the Fourth Proportional to 710,509, 980,939.84 and 456,308.32

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Solution

The fourth proportional to 710,509, 980,939.84 and 456,308.32 is: 629,986.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,509 : 980,939.84 = 456,308.32 : x
  2. Step 2: Convert to fraction form
    710,509/980,939.84 = 456,308.32/x
  3. Step 3: Cross multiply
    710,509x = 980,939.84 × 456,308.32
  4. Step 4: Simplify right side
    710,509x = 447,611,010,411.47
  5. Step 5: Solve for x
    x = 447,611,010,411.47/710,509
  6. Step 6: Final answer
    x = 629,986.40

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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.