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Finding the Fourth Proportional to 1,020,713.40, 1,531,070.10 and 1,020,713.40

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Solution

The fourth proportional to 1,020,713.40, 1,531,070.10 and 1,020,713.40 is: 1,531,070.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,020,713.40 : 1,531,070.10 = 1,020,713.40 : x
  2. Step 2: Convert to fraction form
    1,020,713.40/1,531,070.10 = 1,020,713.40/x
  3. Step 3: Cross multiply
    1,020,713.40x = 1,531,070.10 × 1,020,713.40
  4. Step 4: Simplify right side
    1,020,713.40x = 1,562,783,767,409.34
  5. Step 5: Solve for x
    x = 1,562,783,767,409.34/1,020,713.40
  6. Step 6: Final answer
    x = 1,531,070.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.