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Finding the Fourth Proportional to 666,903.15, 920,075.13 and 437,587.02

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Solution

The fourth proportional to 666,903.15, 920,075.13 and 437,587.02 is: 603,705.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,903.15 : 920,075.13 = 437,587.02 : x
  2. Step 2: Convert to fraction form
    666,903.15/920,075.13 = 437,587.02/x
  3. Step 3: Cross multiply
    666,903.15x = 920,075.13 × 437,587.02
  4. Step 4: Simplify right side
    666,903.15x = 402,612,934,312.81
  5. Step 5: Solve for x
    x = 402,612,934,312.81/666,903.15
  6. Step 6: Final answer
    x = 603,705.25

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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.