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Finding the Fourth Proportional to 722,970.79, 997,699.79 and 400,701.69

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Solution

The fourth proportional to 722,970.79, 997,699.79 and 400,701.69 is: 552,968.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,970.79 : 997,699.79 = 400,701.69 : x
  2. Step 2: Convert to fraction form
    722,970.79/997,699.79 = 400,701.69/x
  3. Step 3: Cross multiply
    722,970.79x = 997,699.79 × 400,701.69
  4. Step 4: Simplify right side
    722,970.79x = 399,779,989,962.14
  5. Step 5: Solve for x
    x = 399,779,989,962.14/722,970.79
  6. Step 6: Final answer
    x = 552,968.39

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Double scale
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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.