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Finding the Fourth Proportional to 869,130,006.30, 1,303,695,009.45 and 773,895,779.10

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Solution

The fourth proportional to 869,130,006.30, 1,303,695,009.45 and 773,895,779.10 is: 1,160,843,668.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,130,006.30 : 1,303,695,009.45 = 773,895,779.10 : x
  2. Step 2: Convert to fraction form
    869,130,006.30/1,303,695,009.45 = 773,895,779.10/x
  3. Step 3: Cross multiply
    869,130,006.30x = 1,303,695,009.45 × 773,895,779.10
  4. Step 4: Simplify right side
    869,130,006.30x = 1,008,924,065,047,089,664
  5. Step 5: Solve for x
    x = 1,008,924,065,047,089,664/869,130,006.30
  6. Step 6: Final answer
    x = 1,160,843,668.65

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Double scale
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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.