Home / 728,991,075.30-1,005,808,342.35-415,610,946.42

Finding the Fourth Proportional to 728,991,075.30, 1,005,808,342.35 and 415,610,946.42

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Solution

The fourth proportional to 728,991,075.30, 1,005,808,342.35 and 415,610,946.42 is: 573,429,457.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,991,075.30 : 1,005,808,342.35 = 415,610,946.42 : x
  2. Step 2: Convert to fraction form
    728,991,075.30/1,005,808,342.35 = 415,610,946.42/x
  3. Step 3: Cross multiply
    728,991,075.30x = 1,005,808,342.35 × 415,610,946.42
  4. Step 4: Simplify right side
    728,991,075.30x = 418,024,957,081,214,912
  5. Step 5: Solve for x
    x = 418,024,957,081,214,912/728,991,075.30
  6. Step 6: Final answer
    x = 573,429,457.84

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Double scale
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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.